公开(公告)号：US09007281B2

公开(公告)日：2015-04-14

申请号：US13666061

申请日：2012-11-01

Applicant: LG Display Co., Ltd.

Inventor： Joongsun Yoon ,  Jihyun Kang

IPC: G09G3/30 ,  G09G3/32

CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/0223 ,  G09G2320/043

Abstract: This embodiments herein relate to an organic light emitting diode display device comprising: a display panel configured to include a plurality of pixels disposed in a matrix form, wherein each of the pixels including: a driving TFT, an organic light emitting diode, a control circuit including first to fourth TFTs, capacitors. The embodiments described herein may improve accuracy of sensing a threshold voltage of the driving TFT even though the organic light emitting diode display device drives high frequency such as 240 Hz because sensing periods are long enough to sense the threshold voltage of the driving TFT. Also, the embodiments described herein may compensate a drop of a high potential voltage due to compensating the current between a drain electrode and a source electrode of the driving TFT by using the high potential voltage dropped.

Abstract translation: 本实施例涉及一种有机发光二极管显示装置，包括：显示面板，被配置为包括以矩阵形式布置的多个像素，其中每个像素包括：驱动TFT，有机发光二极管，控制电路 包括第一至第四TFT，电容器。 这里描述的实施例可以提高感测驱动TFT的阈值电压的精度，即使有机发光二极管显示装置驱动诸如240Hz的高频，因为感测周期足够长以感测驱动TFT的阈值电压。 此外，本文所述的实施例可以通过使用下降的高电位电压补偿驱动TFT的漏电极和源电极之间的电流来补偿高电位电压的下降。